Honey Castella (Kasutera) Cake (蜂蜜蛋糕)

Thursday, 14 November 2013

The traditional mould for baking Castella cake is a bottomless wooden box frame.

Where to get a Castella wooden mould?

You could buy one, make one, or improvise with my method. I put the pan holding the batter in a bigger pan, and there's corrugated cardboard tucked in the space between the two pans. To prevent the cardboard from catching fire in the oven and then burning down the house, I wrap it in foil.

Once you get the mould sorted, you need to pick a recipe. Which one should you go for? Mine, of course!

My Castella cake is soft and moist freshly baked. Yup, you don't have to wrap it in plastic and wait a day before eating it. Nope, I don't cheat by adding oil or that awful stuff, ovalette (aka SP). Neither do I sneak  plain or cake flour into the cake. I use only only bread flour, as I'm supposed to, but the cake is very fluffy.

How do I make a stellar Castella cake?

I start by beating egg whites and sugar till firm peak stage. Once the meringue is firm yet smooth and creamy, I add egg yolks one by one. This method makes an egg foam that's very stable.

There is, of course, honey in honey Castella cake. How much? Just 20 g, enough to flavour the cake but not make it sticky. Honey is whisked into the batter after the egg yolks.

After the honey comes bread flour. The less flour there is, the softer the cake.

The last thing added to the batter is milk. As I fold it into the other ingredients, I bang the mixing bowl against the worktop from time to time to help remove big air bubbles.

Halfway through the mixing, I let the batter rest for a few moments. Perhaps thinking the coast is clear, some unsuspecting air bubbles rise to the surface. And that's when I nap 'em. Bang! Bang! I'm so sneaky, yah?

Transferring the batter into the cake pan gives me another chance to catch those nasty bubbles. I pour slowly, so that some of the big bubbles burst as they flow out of the bowl.

What do I do before the pan goes in the oven?

Yup, bang bang! It's zero tolerance for Castella cake's #1 enemy.

After the cake is done baking, I drop the pan from 1' foot high to stop it from shrinking excessively as it cools down. This is the neatest trick I've ever come across in cake making!

Here's another good trick: invert the pan and let it rest on a wood chopping board for a few moments. This helps keep the top of the cake flat and smooth.

Just before serving, trim the edges of the cake. The cuts must be neat and clean or you've failed even if the cake is perfect in every other way.

I hope you're the obsessive-compulsive type?

(Recipe for one 20 x 12 x 5 cm cake)

85 g egg whites
60 g castor sugar
60 g egg yolks
20 g honey
60 g bread flour
20 g full-fat milk

Cut 5 mm thick corrugated cardboard to fit 4 sides of 23 x 15 cm cake pan. Wrap tightly in aluminium foil, shiny side facing out. Line 4 sides of cake pan with cardboard.

Cut parchment paper to fit bottom of 20 x 12 x 5 cm cake pan. Grease lightly with vegetable oil. Place paper in cake pan, oiled side up.

Preheat oven to 160°C.

Whisk egg whites till bubbles are very small. Gradually add castor sugar whilst still whisking. Continue to whisk till firm (not stiff) peak stage, reducing speed towards the end to remove big air bubbles and prevent overwhisking.

Add yolks to whisked egg white in 4 batches. Whisk on low speed till evenly mixed after each addition.

Add honey. Repeat whisking as before.

Sift half of bread flour into batter. Mix with whisk till almost even. Sift remaining flour. Mix till just even.

Drizzle milk around bowl. Whisk, skimming just top part of batter, till you don't see any milk.

Scrape down and fold with spatula, banging bowl against worktop from time to time, till everything is just evenly mixed. Let batter rest 10 seconds or so midway, then bang bowl against worktop.

Pour batter into lined cake pan, slowly and from about 30 cm high so that air bubbles burst as they flow out of bowl. Tap pan against worktop 3-4 times. Place in bigger cake pan prepared earlier. Bake in bottom of oven till cake is brown and makes a soft squishing sound when pressed lightly, about 35 minutes. (If squishing is loud, cake is still too wet. If there's no sound at all, cake is overbaked and too dry.)

Remove pans from oven. Remove cardboard and outer pan. Drop smaller cake pan from about 30 cm high, 2-3 times. Wait a few moments till top of cake starts to wrinkle slightly. Invert pan onto wooden chopping board. Wait till top of cake is flat and smooth, about 30 seconds. Re-invert pan. Leave on wire rack till cool. Unmould, trim edges, cut and serve.

Cake is best eaten on day it's made, especially if it's cut. If serving the next day, or if cake is overbaked, wrap in plastic whilst still warm and unmoulded, till serving time.


Fountain said...

Hi there,
Thank you for such great presentation and recipes on your blog...and for being so kind to share them. I have visited your site off and on and have always been intrigued by the recipes, especially your method and precision.The videos are so clear and the steps made simple and a delight just to watch. I have tried one so far, the tapioca traditional cake. It came out ok..but not as pretty!!

May I request a recipe... if you please? I love the traditional bahulu(cermai) I have not been able to find a clear or convincing enough recipe nor method for this. I am sure if you made them, it would be on the contrary. If you don't have the recipe its ok. My heartiest thanks and God bless you!

The Castella cake(exotic name and intricate process)looks amazing I must say!!

Grace-Life can be simple said...

Truly, your castella cake version is one of the least fuss free one I've seen. You totally make me want to even try to make this castella. I absolutely love all your tips :) Thanks so much!!

Ann said...

I baked this and it is a success on my first try!

Thank you!

Lay said...

Where did you buy your hand mixer pl. thanks

teochiu girl said...

Is bread flour the same as all purpose flour?

teeaych said...

I just tried this recipe, and it's amazing! Super soft + fine even crumb. Looks pretty to boot.

I still need to work on making sure there are ZERO big bubbles though, but for a first try, it's pretty good.
Unfortunately, I was unable to follow the recipe to the T as I can't find the pan size you used. I also wasn't able to do the surrounding cardboard set-up (I don't have another loaf pan that is slightly larger than the first pan holding the batter). Because I used a larger loaf pan, I had to increase the amount of ingredients by 2/3rds. It was a pain trying to get the exact amount of yolks and whites (I used around 6.67 yolks). Next time, I will just increase the yolks to 7, and have the rest of the ingredients adjust accordingly as I still have lots of room in my loaf pan for more batter.

Thanks for this recipe, it is definitely a keeper!

Jamie said...

Thank you for your recipes it is so good...never before have i baked cakes with fluffiness

Alex said...

Hi Andy,
Pls check the ingredients and method by clicking recipe above. This is an innovative and time-saving recipe. Hope you'll get a clearer picture! Very clever KT! Thanks!

frances said...

Hi KT,

May i humbly know what brand is your electric whisk and where to get it? It seems to be cordless?

Thanks so much!

Daniel Oon CT said...

Being Penang-born, I am interested with Nyonya dishes & so bought Mrs Lee Cookbook to try on but always got stuck halfway. Talking about Shermay, I've attended a dozen times with other renown chefs due to the de Dietrich vouchers I got for buying many ovens. Throughout my lessons there, I never find her approachable nor genuine but kind of plastic treatments unless you are someone famous, wealthy or a celebrity. I reckon the presence of inviting other famous chefs kept the school going.

Micky said...

Hi KT! another great receipe especially loves the re-engineering part. Intend to to try it this weekend with frozen leaves as my last bottle of ya kun have already been lick clean.
Just so you know you are my go to whenever when i want to cook singapore.

MMarley said...

Wish I had come across your blog before spending a fortune on her crappy set of books. Great writing BTW. Witty and in ur face LOL Cant wait to try your recipes.

YEU said...

Dear KT,
Can you do rendang ? Teach me teach me plsssss....

Phong Hong said...

Madam, you've got balls! Big ones!

Rachel said...

Saw the feedback about it turning lumpy. I experience the same on my first try coz i was too anxious and used too much heat.

It's okay, just throw it into the blender to blend abit after it've cool. all thick and smooth again...

cheng said...

what a joke an embarrassment to all nonyas. Is she really a nonya? Love your style. Sure miss the old kampung days. Really enjoy your site. Thanks for the laughs and the recipes.

Sham Boomthatha said...

What a fantastic way to make kaya! Thank you so much for sharing! If I can't find palm sugar, what can I substitute it with?

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